We come from dust, we are dust, and return to dust. Thus is the unchangeable nature of God. Behold immortality!
Jesus said "I am with you always": this is such a beautiful statement when understood in its deepest sense.
As the word "always" suggests, He is not present in time, He is time. I am with you all-ways - God is present in every way, how can Reality abandon you?
Immortal and infinite
Does "immortal" mean everlasting life? No such thing! To be immortal is to be im-mortal, that is, not mortal, not living - and thus incapable of death.
Similarly, "infinite" means not finite; it does not mean "immeasurably large".